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ES478053A1 - Display tube for displaying color pictures - Google Patents

Display tube for displaying color pictures

Info

Publication number
ES478053A1
ES478053A1 ES478053A ES478053A ES478053A1 ES 478053 A1 ES478053 A1 ES 478053A1 ES 478053 A ES478053 A ES 478053A ES 478053 A ES478053 A ES 478053A ES 478053 A1 ES478053 A1 ES 478053A1
Authority
ES
Spain
Prior art keywords
shaped
deflection
display tube
cushion
barrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES478053A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES478053A1 publication Critical patent/ES478053A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

Because the deflection fields in color television display tubes on the display screen side often have a pin-cushion-shaped and barrel-shaped field distribution, a defocusing of the electron beams occurs upon deflection. By forming the barrel-shaped deflection field on the display screen side of the display tube so as to be pin-cushion-shaped on the neck side near each electron beam and simultaneously deforming the deflection field which is pin-cushion-shaped on the display screen side of the display tube so as to be barrel-shaped on the neck side near each electron beam, the effects of said defocusing of the electron beams as a result of the deflection are considerably reduced. The haze occurring in the vertical direction is also reduced.
ES478053A 1978-02-27 1979-02-24 Display tube for displaying color pictures Expired ES478053A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7802129A NL7802129A (en) 1978-02-27 1978-02-27 DEVICE FOR DISPLAYING COLORED IMAGES.

Publications (1)

Publication Number Publication Date
ES478053A1 true ES478053A1 (en) 1979-07-16

Family

ID=19830399

Family Applications (1)

Application Number Title Priority Date Filing Date
ES478053A Expired ES478053A1 (en) 1978-02-27 1979-02-24 Display tube for displaying color pictures

Country Status (14)

Country Link
US (1) US4346327A (en)
JP (1) JPS54123869A (en)
AR (1) AR220740A1 (en)
BE (1) BE874460A (en)
CA (1) CA1124307A (en)
CS (1) CS227669B2 (en)
DE (1) DE2907300A1 (en)
ES (1) ES478053A1 (en)
FR (1) FR2418542B1 (en)
GB (1) GB2015247B (en)
IT (1) IT1111990B (en)
NL (1) NL7802129A (en)
SE (2) SE7901626L (en)
YU (1) YU47379A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54139372A (en) * 1978-04-20 1979-10-29 Hitachi Ltd Cathode-ray tube
JPS5738544A (en) * 1980-08-19 1982-03-03 Matsushita Electronics Corp Electromagnetic deflection system picture tube system equipment
DE3212248A1 (en) * 1982-04-02 1983-10-06 Standard Elektrik Lorenz Ag ELECTRON OPTICS OF THE ELECTRONIC RADIATOR GENERATOR SYSTEM OF A COLOR IMAGE TUBE
JPS58225543A (en) * 1982-06-23 1983-12-27 Matsushita Electronics Corp Color picture tube apparatus
US4496882A (en) * 1982-12-03 1985-01-29 Motorola, Inc. Inductorless pincushion correction circuit
JPS59119654A (en) * 1982-12-24 1984-07-10 Matsushita Electronics Corp Picture tube apparatus
NL8301712A (en) * 1983-05-13 1984-12-03 Philips Nv COLOR IMAGE TUBE.
US4556819A (en) * 1983-12-13 1985-12-03 Rca Corporation Color picture tube having inline electron gun with coma correction members
NL8401444A (en) * 1984-05-07 1985-12-02 Philips Nv PICTURE TUBE.
JPH08315751A (en) * 1995-05-12 1996-11-29 Hitachi Ltd Method for correcting deflection aberration of cathode ray tube, cathode ray tube, and image display device
TW417132B (en) * 1996-02-27 2001-01-01 Hitachi Ltd CRT, deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT
JP2001135259A (en) 1999-11-02 2001-05-18 Matsushita Electronics Industry Corp Color cathode-ray tube and apparatus thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1392502A (en) * 1963-10-30 1965-03-19 Cft Comp Fse Television Operation with color television receiver tubes
JPS4833529B1 (en) * 1968-12-30 1973-10-15
JPS5126208B1 (en) * 1971-05-18 1976-08-05
US3928785A (en) * 1971-11-23 1975-12-23 Adrian W Standaart Single gun, multi-screen, multi-beam, multi-color cathode ray tube
BE793992A (en) * 1972-01-14 1973-05-02 Rca Corp CATHODIC RAY TUBE
US3873879A (en) * 1972-01-14 1975-03-25 Rca Corp In-line electron gun
FR2213581A1 (en) * 1973-01-08 1974-08-02 Hitachi Ltd
US3866080A (en) * 1973-08-08 1975-02-11 Rca Corp Inline electron gun having magnetically permeable plates for enhancing convergence of electron beams
US3984723A (en) * 1974-10-04 1976-10-05 Rca Corporation Display system utilizing beam shape correction
JPS5615102B2 (en) * 1974-10-14 1981-04-08
JPS5845135B2 (en) * 1975-11-12 1983-10-07 株式会社日立製作所 Henkojikaiseigyososhitsukikara-jiyuzoukan
JPS5259527A (en) * 1975-11-12 1977-05-17 Hitachi Ltd Color picture tube with deflection magnetic field control elements
US4142131A (en) * 1975-11-12 1979-02-27 Hitachi, Ltd. Color picture tube
JPS6029183B2 (en) * 1976-08-25 1985-07-09 株式会社日立製作所 deflection yoke

Also Published As

Publication number Publication date
NL7802129A (en) 1979-08-29
IT1111990B (en) 1986-01-13
JPS63897B2 (en) 1988-01-09
DE2907300A1 (en) 1979-09-06
JPS54123869A (en) 1979-09-26
FR2418542A1 (en) 1979-09-21
SE435879B (en) 1984-10-22
IT7920513A0 (en) 1979-02-23
AR220740A1 (en) 1980-11-28
GB2015247B (en) 1982-06-03
CA1124307A (en) 1982-05-25
US4346327A (en) 1982-08-24
FR2418542B1 (en) 1986-02-28
YU47379A (en) 1982-10-31
SE7901626L (en) 1979-08-28
GB2015247A (en) 1979-09-05
BE874460A (en) 1979-08-27
CS227669B2 (en) 1984-05-14

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